Analysis
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max time kernel
143s -
max time network
151s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21-05-2022 01:28
Static task
static1
Behavioral task
behavioral1
Sample
tmp.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
tmp.exe
Resource
win10v2004-20220414-en
General
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Target
tmp.exe
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Size
653KB
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MD5
cf67271f2b35c9db343f08eba81c2408
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SHA1
2862120c6c8fac978543d4dc9ccf8cf337361fe6
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SHA256
447531e094a1210b3de8f430e72c6fc8abcb8adfee2b029ad7480bb4eb2f77a7
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SHA512
a18926c2dc262ae1125ee1bf5a33e11712e52aad38db8fe0947e0f4b0ad5abc398a3a8422ba1ee0fb739de7c28d62ab4b266832c03ee2706b7715e3b02ca7751
Malware Config
Extracted
Protocol: smtp- Host:
us2.smtp.mailhostbox.com - Port:
587 - Username:
[email protected] - Password:
5+t@dw5Mc}Dr
Extracted
agenttesla
Protocol: smtp- Host:
us2.smtp.mailhostbox.com - Port:
587 - Username:
[email protected] - Password:
5+t@dw5Mc}Dr
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
tmp.exedescription pid process target process PID 892 set thread context of 1276 892 tmp.exe RegAsm.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 1536 timeout.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
tmp.exeRegAsm.exepid process 892 tmp.exe 1276 RegAsm.exe 1276 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 1276 RegAsm.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
RegAsm.exepid process 1276 RegAsm.exe -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
tmp.execmd.exedescription pid process target process PID 892 wrote to memory of 1644 892 tmp.exe cmd.exe PID 892 wrote to memory of 1644 892 tmp.exe cmd.exe PID 892 wrote to memory of 1644 892 tmp.exe cmd.exe PID 892 wrote to memory of 1644 892 tmp.exe cmd.exe PID 1644 wrote to memory of 1536 1644 cmd.exe timeout.exe PID 1644 wrote to memory of 1536 1644 cmd.exe timeout.exe PID 1644 wrote to memory of 1536 1644 cmd.exe timeout.exe PID 1644 wrote to memory of 1536 1644 cmd.exe timeout.exe PID 892 wrote to memory of 1276 892 tmp.exe RegAsm.exe PID 892 wrote to memory of 1276 892 tmp.exe RegAsm.exe PID 892 wrote to memory of 1276 892 tmp.exe RegAsm.exe PID 892 wrote to memory of 1276 892 tmp.exe RegAsm.exe PID 892 wrote to memory of 1276 892 tmp.exe RegAsm.exe PID 892 wrote to memory of 1276 892 tmp.exe RegAsm.exe PID 892 wrote to memory of 1276 892 tmp.exe RegAsm.exe PID 892 wrote to memory of 1276 892 tmp.exe RegAsm.exe PID 892 wrote to memory of 1276 892 tmp.exe RegAsm.exe PID 892 wrote to memory of 1276 892 tmp.exe RegAsm.exe PID 892 wrote to memory of 1276 892 tmp.exe RegAsm.exe PID 892 wrote to memory of 1276 892 tmp.exe RegAsm.exe -
outlook_office_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe -
outlook_win_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout 102⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 103⤵
- Delays execution with timeout.exe
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/892-54-0x00000000009D0000-0x0000000000A7A000-memory.dmpFilesize
680KB
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memory/892-55-0x0000000004350000-0x00000000043B0000-memory.dmpFilesize
384KB
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memory/892-56-0x00000000047B0000-0x00000000047FC000-memory.dmpFilesize
304KB
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memory/892-57-0x0000000076191000-0x0000000076193000-memory.dmpFilesize
8KB
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memory/1276-60-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/1276-61-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/1276-64-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/1276-63-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/1276-70-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/1276-68-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/1276-66-0x0000000000435A6E-mapping.dmp
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memory/1276-65-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/1536-59-0x0000000000000000-mapping.dmp
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memory/1644-58-0x0000000000000000-mapping.dmp